Topic: Taylor Taylor Hobson Cooke Anastigmat 12.5mm f2.5: First Session
I have been searching for one of these since I saw a set of images from an f2.7 version in a photographic magazine. I had to wait many years, as they are rarely available. The lens has variable aperture, down to f16, but no focusing mechanism. Essentially, it is a bellows lens.
Just to make thing worse, the thread is M32 x 1.0mm. I have many adapters but I had nothing for this. So I contacted raf.camera dealer on Ebay who, after some discussion, made one for me. It is a thread converter, inner, female, thread M32, outer, male, thread M42. It arrived this morning.
I have had just a quickie session with it. Would it form an image and would it cover the sensor? On m4/3 both were OK. Straight onto the camera, via the new adapter and an M42-m4;/3 adapter, the FOV was 4mm wide at a working distance of ca 15mm. I tried a few shots at f16, with triple flash, hand-held. At that working distance the main problem was not to block the off-camera flash with the camera.
The subjects were those I have posted elsewere on the site, recently, shot through my Schneider HM40 setup. There are two slime moulds and the goblet-shaped mushroom with "eyelashes".
I am very pleased with the results. Whether they are up to those from the HM40, I suspect not, remains to be seen. I originally wanted the lens for lower magnifications that show here.
I want to see what the lens will do at higher magnifications. One option is to use tubes on the camera flange to set shorter extensions. The other, if it covers the frame, is to use my full frame A7R.
The images are uncropped.
Last edited by e6filmuser (2016-11-30 21:17:53)